Answer:
Hmmmm
Step-by-step explanation:
Let’s see here
Answer:
a = 7
Step-by-step explanation:
Using the rule of radicals
× 
⇔ 
Given
(
+ 
) ← distribute parenthesis by
= 
+ 
= 
+ 
= 
× 
+ (
× )
= 3 + 4
= 7 → in the form a
with a = 7
Answer:
50 mph, 450 mi, 73.3 ft/sec
Step-by-step explanation:
Part 1:
Find the unit rate (which here is mph).
175 mi
------------- = 50 mph
3.5 hrs
Part 2:
In 8.5 hrs, the Andersons can expect to cover (50 mph)(8.5 hr) = 425 mi
Part 3:
50 mph 88 ft/sec
------------ * ----------------- = 73.33 ft/sec, or 73.3 ft/sec to the nearest tenth.
1 60 mph
C = 3.14 x D or C = 2 x 3.14 x R
So, C = 2 x 3.14 x 20
The answer is 40pi.
Answer: length = 24 ft
Width = 8 ft
Step-by-step explanation:
Let L represent the length of the barn.
Let W represent the width of the barn.
The area of a rectangular wall of a barn is 192 sq. Ft. This means that
LW = 192- - - - - - - - - - - - - - -1
It's length is 8 ft longer than twice it's width. This means that
L = 2W + 8
Substituting L = 2W + 8 into equation 1, it becomes
W(2W + 8) = 192
2W² + 8W = 192
2W² + 8W - 192 = 0
Dividing through by 2, it becomes
W² + 4W - 96 = 0
W² + 12W - 8W - 96 = 0
W(W + 12) - 8(W + 12) = 0
(W - 8)(W + 12) = 0
W = 8 or W = - 12
Since the width cannot be negative, then W = 8
L = 192/W = 192/8
L = 24
